"""
站点及站点运行数据的只读应用服务。
"""

from __future__ import annotations

import builtins
from typing import Optional

from app.application.site.contract import SiteQueryPort
from app.schemas.site import Site, SiteIconData, SiteStatistic, SiteUserData


class SiteQueryService:
    """
    把站点持久化快照投影为 API/Chain 可复用的 DTO。
    """

    def __init__(self, repository: SiteQueryPort) -> None:
        """
        保存站点查询仓储端口。
        """
        self._repository = repository

    async def list_ordered(
        self,
        *,
        is_active: Optional[bool] = None,
        name: Optional[str] = None,
        site_ids: Optional[builtins.list[int]] = None,
        domains: Optional[builtins.list[str]] = None,
        page: Optional[int] = None,
        count: Optional[int] = None,
    ) -> builtins.list[Site]:
        """
        按筛选、优先级和可选分页窗口返回配置 DTO。
        """
        if all(
            value is None
            for value in (is_active, name, site_ids, domains, page, count)
        ):
            items = await self._repository.async_list_order_by_pri()
        else:
            items = await self._repository.async_list_order_by_pri(
                is_active=is_active,
                name=name,
                site_ids=site_ids,
                domains=domains,
                page=page,
                count=count,
            )
        return [Site.model_validate(item) for item in items]

    async def count_ordered(
        self,
        *,
        is_active: Optional[bool] = None,
        name: Optional[str] = None,
        site_ids: Optional[builtins.list[int]] = None,
        domains: Optional[builtins.list[str]] = None,
    ) -> int:
        """
        按与站点列表一致的筛选条件返回总数。
        """
        return await self._repository.async_count_sites(
            is_active=is_active,
            name=name,
            site_ids=site_ids,
            domains=domains,
        )

    async def list(self) -> builtins.list[Site]:
        """
        返回全部站点配置 DTO。
        """
        return [Site.model_validate(item) for item in await self._repository.async_list()]

    async def get(self, site_id: int) -> Optional[Site]:
        """
        按 ID 返回站点配置 DTO。
        """
        item = await self._repository.async_get(site_id)
        return Site.model_validate(item) if item else None

    def get_sync(self, site_id: int) -> Optional[Site]:
        """
        同步按 ID 返回站点配置 DTO。
        """
        item = self._repository.get(site_id)
        return Site.model_validate(item) if item else None

    async def get_by_domain(self, domain: str) -> Optional[Site]:
        """
        按域名返回站点配置 DTO。
        """
        item = await self._repository.async_get_by_domain(domain)
        return Site.model_validate(item) if item else None

    def get_by_domain_sync(self, domain: str) -> Optional[Site]:
        """
        同步按规范域名读取站点配置，供独立种子下载匹配流控规则。

        :param domain: 请求地址提取出的规范站点域名
        :return: 站点配置；没有匹配站点时为 None
        """
        item = self._repository.get_by_domain(domain)
        return Site.model_validate(item) if item else None

    async def userdata_latest(
        self,
        *,
        page: Optional[int] = None,
        count: Optional[int] = None,
    ) -> builtins.list[SiteUserData]:
        """
        按可选分页窗口返回各站点最新用户数据 DTO。
        """
        if page is None and count is None:
            items = await self._repository.async_get_userdata_latest()
        else:
            items = await self._repository.async_get_userdata_latest(
                page=page,
                count=count,
            )
        return [SiteUserData.model_validate(item) for item in items]

    async def count_userdata_latest(self) -> int:
        """
        返回各站点最新用户数据查询的结果总数。
        """
        return await self._repository.async_count_userdata_latest()

    async def userdata(
        self,
        domain: str,
        workdate: Optional[str] = None,
        *,
        page: Optional[int] = None,
        count: Optional[int] = None,
    ) -> builtins.list[SiteUserData]:
        """
        按可选分页窗口返回指定站点用户数据 DTO。
        """
        if page is None and count is None:
            items = await self._repository.async_get_userdata_by_domain(
                domain,
                workdate,
            )
        else:
            items = await self._repository.async_get_userdata_by_domain(
                domain,
                workdate,
                page=page,
                count=count,
            )
        return [
            SiteUserData.model_validate(item)
            for item in items
        ]

    async def count_userdata(
        self,
        domain: str,
        workdate: Optional[str] = None,
    ) -> int:
        """
        返回指定站点和日期的用户数据总数。
        """
        return await self._repository.async_count_userdata_by_domain(
            domain,
            workdate,
        )

    async def icon(self, domain: str) -> Optional[SiteIconData]:
        """
        返回站点图标 DTO。
        """
        item = await self._repository.async_get_icon_by_domain(domain)
        if not item:
            return None
        return SiteIconData(
            icon=item.base64 if item.base64 else item.url,
        )

    async def statistic(self, domain: str) -> SiteStatistic:
        """
        返回指定站点统计 DTO，未命中时返回空统计。
        """
        item = await self._repository.async_get_statistic_by_domain(domain)
        return SiteStatistic.model_validate(item) if item else SiteStatistic(domain=domain)

    async def statistics(
        self,
        *,
        page: Optional[int] = None,
        count: Optional[int] = None,
    ) -> builtins.list[SiteStatistic]:
        """
        按可选分页窗口返回站点统计 DTO。
        """
        if page is None and count is None:
            items = await self._repository.async_list_statistics()
        else:
            items = await self._repository.async_list_statistics(
                page=page,
                count=count,
            )
        return [SiteStatistic.model_validate(item) for item in items]

    async def count_statistics(self) -> int:
        """
        返回站点统计记录总数。
        """
        return await self._repository.async_count_statistics()

    def userdata_latest_sync(self) -> builtins.list[SiteUserData]:
        """
        同步返回各站点最新用户数据 DTO。
        """
        return [SiteUserData.model_validate(item) for item in self._repository.get_userdata_latest()]


_configured_site_query_service: SiteQueryService | None = None


def configure_site_query_service(service: SiteQueryService) -> None:
    """
    由启动组合根登记站点查询服务。
    """
    global _configured_site_query_service
    _configured_site_query_service = service


def reset_site_query_service() -> None:
    """
    清除当前 lifespan 的站点查询服务。
    """
    global _configured_site_query_service
    _configured_site_query_service = None


def get_configured_site_query_service() -> SiteQueryService:
    """
    返回启动阶段登记的站点查询服务。
    """
    if _configured_site_query_service is None:
        raise RuntimeError("站点查询服务尚未配置")
    return _configured_site_query_service